Honestly at first I was not very convinced because it is difficult to get used to very strange design. But necessity is the airplane for 12 hours !! And actually it works pretty well once we have a 'stalled' as it should. The big difference with other cushions is that part is under the jaw and that does not sleep mouth wide open ... and the head is supported even if we can not lean sideways. Positive results donc.On can attach it to the bag rather than putting it inside because it still takes a lot of space!